Hi stefani,
This is intuitionist, I received my iphone 5s gold late yesterday afternoon, delivered by UPS, with the 16 GB SIM installed already. In order to activate the phone I had to remove the nnano sim card (on the right edge of the phone there is an oval cover with a little pinhole to the left of it.) I had to use a needle to push in in order to remove the carrier which has the nano SIM card sittin in it. There is a corner that is cut off which needs to match the same shape into the carrier. I had to read both the top long line of numbers and letters, and the bottom row right after wards in order to be able to activated the phone. On the box there is a label with a title: IMEI: LETTERS AND NUMBERS WITH A RIGHT SLASH / FOLLOWED BY A LETTER. That number is also requested, and then viola, your brand new, thin, sleek, gold iphone 5s is ready to roll.
I hope you are very close to receive that email from Apple letting you know your phone is on its way!
Congrats!
intuitionist